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27 Energy and heat transfer engineering
New standards
EVS-EN 12309-2:2026
Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70 kW - Part 2: Safety
Scope:
1.1 Scope of EN 12309 series
Appliances covered by this EN 12309 series include one or a combination of the following:
- gas fired sorption chiller;
- gas fired sorption chiller/heater;
- gas fired sorption heat pump.
This EN 12309 series applies to appliances only when used for space heating and cooling with or without heat recovery.
This EN 12309 series applies to appliances having flue gas systems of type B and C (according to EN 1749:2020) and to appliances designed for outdoor installations, including type A. EN 12309 does not apply to air conditioners, it only applies to appliances having:
- integral burners under the control of fully automatic burner control systems;
- closed system refrigerant circuits in which the refrigerant does not come into direct contact with the water or air to be cooled or heated;
— mechanical means to assist transportation of the combustion air and/or the flue gas.
The above appliances can have one or more primary or secondary functions (i.e. heat recovery - see definitions in EN 12309-1:2023). In the case of packaged units (consisting of several parts), the standard applies only to those designed and supplied as a complete package.
The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by this document.
Installations used for heating and/or cooling of industrial processes are not within the scope of these standards.
NOTE All the symbols given in this text are used regardless of the language used.
1.2 Scope of this document
This document deals with the safety of gas-driven sorption appliances for heating and/or cooling having net heat input not exceeding 70 kW as defined in EN 12309-1:2023. It only applies to appliances:
1) where the temperature of the water does not exceed 105 °C during normal operation;
2) where the maximum operating pressure in the water circuit does not exceed 6 bar;
3) types B12, B13, B22, B23, C12, C13, C32, C33 and C63;
4) for outdoor installations, including type A appliances.
This document does not include specific requirements on surface temperatures of external parts particular to children and elderly people.
Appliances covered by this EN 12309 series include one or a combination of the following:
- gas fired sorption chiller;
- gas fired sorption chiller/heater;
- gas fired sorption heat pump.
This EN 12309 series applies to appliances only when used for space heating and cooling with or without heat recovery.
This EN 12309 series applies to appliances having flue gas systems of type B and C (according to EN 1749:2020) and to appliances designed for outdoor installations, including type A. EN 12309 does not apply to air conditioners, it only applies to appliances having:
- integral burners under the control of fully automatic burner control systems;
- closed system refrigerant circuits in which the refrigerant does not come into direct contact with the water or air to be cooled or heated;
— mechanical means to assist transportation of the combustion air and/or the flue gas.
The above appliances can have one or more primary or secondary functions (i.e. heat recovery - see definitions in EN 12309-1:2023). In the case of packaged units (consisting of several parts), the standard applies only to those designed and supplied as a complete package.
The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by this document.
Installations used for heating and/or cooling of industrial processes are not within the scope of these standards.
NOTE All the symbols given in this text are used regardless of the language used.
1.2 Scope of this document
This document deals with the safety of gas-driven sorption appliances for heating and/or cooling having net heat input not exceeding 70 kW as defined in EN 12309-1:2023. It only applies to appliances:
1) where the temperature of the water does not exceed 105 °C during normal operation;
2) where the maximum operating pressure in the water circuit does not exceed 6 bar;
3) types B12, B13, B22, B23, C12, C13, C32, C33 and C63;
4) for outdoor installations, including type A appliances.
This document does not include specific requirements on surface temperatures of external parts particular to children and elderly people.
Base documents:
EN 12309-2:2026
EVS-EN IEC 63402-2-2:2026
Energy efficiency - Customer energy management system - Part 2-2: Data model and messaging - Interface between the customer energy manager and resource managers
Scope:
This document specifies the fundamental aspects of semantic interoperability for the S2 interface and the related data exchange between a CEM and the resource managers within the premises. It provides a technology independent set of data models and interaction patterns in order to enable applications for energy management within the premises. This document does not include:
– mappings to concrete data representations (XML, JSON and similar);
– mappings to application protocols for the message passing;
– security related aspects.
This group EE publication is primarily intended to be used as an EE standard for the products mentioned in the scope, but is also intended to be used by TCs in the preparation of publications for products which are included in the boundary mentioned in the scope of this document.
– mappings to concrete data representations (XML, JSON and similar);
– mappings to application protocols for the message passing;
– security related aspects.
This group EE publication is primarily intended to be used as an EE standard for the products mentioned in the scope, but is also intended to be used by TCs in the preparation of publications for products which are included in the boundary mentioned in the scope of this document.
Base documents:
IEC 63402-2-2:2026; EN IEC 63402-2-2:2026
EVS-EN IEC 63387-1:2026
Hybrid CPV/PV modules: General characteristics and measurement procedures - Part 1: Performance measurements and power rating - Irradiance and temperature
Scope:
This part of IEC 63387 specifies the methods for evaluating CPV/PV hybrid module performance in terms of power rating. Standard conditions for assessing the power produced by the module and the procedures to measure the power as a function of AOI, irradiance, and temperature are described. A methodology for determining a set of characterization parameter values for the hybrid CPV/PV module (FoV) is also included. In order to compare the performance of different hybrid CPV/PV modules whose output is discontinuous and time dependent, the concept of effective nominal power is introduced.
This document is applicable to CPV/PV hybrid modules which include both solar cells designed to collect concentrated light (CPV cells array) and solar cells designed to collect diffuse or global light (PV cells array), the latter with bifacial or monofacial illumination. This document applies to hybrid CPV/PV modules with a geometrical concentration ratio > 3x for the CPV cells.
For lower geometrical concentration ratio (≤ 3x), the IEC 60904-1 [11] and IEC 61853 series apply.
This document is applicable to CPV/PV hybrid modules which include both solar cells designed to collect concentrated light (CPV cells array) and solar cells designed to collect diffuse or global light (PV cells array), the latter with bifacial or monofacial illumination. This document applies to hybrid CPV/PV modules with a geometrical concentration ratio > 3x for the CPV cells.
For lower geometrical concentration ratio (≤ 3x), the IEC 60904-1 [11] and IEC 61853 series apply.
Base documents:
IEC 63387-1:2026; EN IEC 63387-1:2026
EVS-EN IEC 62788-2-1:2023/A1:2026
Measurement procedures for materials used in photovoltaic modules - Part 2-1: Polymeric materials - Frontsheet and backsheet - Safety requirements
Scope:
Amendment to EN IEC 62788-2-1:2023
Base documents:
IEC 62788-2-1:2023/AMD1:2026; EN IEC 62788-2-1:2023/A1:2026
CWA 18486:2026
New recommendations for monitoring and follow-up of energy efficiency measures implementation
Scope:
The present document aims to establish guidelines and good practices for the implementation of energy efficiency measures in industries, based on the results obtained from energy audits and Energy Management Systems (EnMS). Its purpose is to provide a best-practice framework enabling organisations to identify and implement energy improvements and energy transition path in a systematic, efficient manner and in alignment with the applicable energy efficiency and climate regulatory framework.
This document applies to industries across all sectors, and particularly to energy-intensive sectors. That is, sectors and companies carrying out mandatory energy audits or Energy Management Systems in accordance with national, European standards and International standards. It includes reference legislation and methodologies, as well as good practices and recommendations for the implementation of energy efficiency and energy transition measures, the monitoring of the implementation process, and the evaluation of the results obtained.
This document is intended for use after energy audits carried out under applicable national requirements or recognised standards such as EN 16247 (series) and ISO 50002-1. It uses as input the opportunities and measures for reducing energy consumption identified in the energy audit report and provides guidance for their selection, implementation, monitoring and verification. The document can also be used by organisations operating, implementing or considering an Energy Management System according to ISO 50001.
This document does not replace legal obligations, certification requirements or sector-specific permitting requirements. It provides practical recommendations to support decision-making, implementation control, measurement and verification, and management review.
This document applies to industries across all sectors, and particularly to energy-intensive sectors. That is, sectors and companies carrying out mandatory energy audits or Energy Management Systems in accordance with national, European standards and International standards. It includes reference legislation and methodologies, as well as good practices and recommendations for the implementation of energy efficiency and energy transition measures, the monitoring of the implementation process, and the evaluation of the results obtained.
This document is intended for use after energy audits carried out under applicable national requirements or recognised standards such as EN 16247 (series) and ISO 50002-1. It uses as input the opportunities and measures for reducing energy consumption identified in the energy audit report and provides guidance for their selection, implementation, monitoring and verification. The document can also be used by organisations operating, implementing or considering an Energy Management System according to ISO 50001.
This document does not replace legal obligations, certification requirements or sector-specific permitting requirements. It provides practical recommendations to support decision-making, implementation control, measurement and verification, and management review.
Base documents:
CWA 18486:2026
CWA 18485:2026
Guidelines for the Integrated and Context-Sensitive Development of Positive Energy Districts (PEDs)
Scope:
This CEN Workshop Agreement (CWA) provides non-prescriptive, process-oriented guidance for the integrated and context-sensitive development of Positive Energy Districts (PEDs). It supports PED Development Readiness in real urban contexts by helping users to structure, document, interpret and adapt the main phases of a PED development process.
For the purposes of this CWA, the integrated component of the guidance is operationalised as a Development Readiness Integration Workflow. This workflow provides the overarching process logic through which PED development may be structured across scoping, context analysis, objective setting, scenario development, screening, governance reflection, implementation readiness, monitoring and adaptive learning.
The context-sensitive component of the guidance is operationalised through a set of context-sensitive guidance elements developed in Clauses 6 to 11. These elements support users in adapting the Development Readiness Integration Workflow to local technical, spatial, institutional, regulatory, social, governance and equity conditions. They are intended to help users take account of data availability, stakeholder configurations, territorial constraints, policy frameworks, implementation capacities and local vulnerabilities when developing PED pathways.
The CWA is based on the practical experiences, findings and lessons learned from the Citizens4PED project. In this document, Development Readiness refers to the capacity of a local context to meaningfully progress through PED development phases by clarifying decision-making conditions, data availability, stakeholder roles, governance arrangements, scenario assumptions and implementation constraints.
This CWA is intended to be used by municipalities, local authorities, urban planners, researchers, consultants, utilities, distribution system operators (DSOs), developers, governance actors and other stakeholders engaged in PED co-design, planning, implementation, monitoring or replication. It is particularly relevant for complex, data-poor, institutionally fragmented or under-resourced urban settings, where PED development requires coordination across technical, spatial, institutional and social domains.
This CWA covers the procedural and organisational aspects that support PED Development Readiness. These include, in particular:
- the structuring of an integrated, PED-oriented urban development process, connecting energy planning, spatial planning, governance, stakeholder engagement, implementation readiness and monitoring;
- support for aligning PED development processes with climate-neutrality ambitions, through scenario exploration, carbon-related screening, complementary indicators and transparent documentation of assumptions, without establishing compliance criteria or mandatory performance thresholds;
- the structuring of cooperation between technological, spatial, institutional and social domains involved in PED development;
- the definition of a flexible Development Readiness workflow, including process phases, inputs, outputs, decision checkpoints and assumption management;
- the identification of contextual information needs, data quality considerations, proxy use, stakeholder and asset mapping, and territorial and institutional readiness conditions;
- the exploration and documentation of alternative PED scenarios, including the clarification of assumptions, boundaries, data limitations and context-specific constraints;
- the use of screening metrics and decision-support criteria, including the Carbon Neutrality Check (CNC) and complementary economic, resilience-related, governance and equity considerations, as inputs to collective interpretation rather than as compliance criteria;
- the integration of governance, participation and equity considerations into PED development processes, including attention to formal and informal stakeholders, vulnerable groups, distributional effects and decision transparency;
- the preparation of implementation-oriented action planning, including policy–technology coherence, administrative capacity, roles and responsibilities, risks, quick wins, and adaptive replication or scaling considerations;
- the establishment of monitoring, learning and adaptation mechanisms that support the revision of assumptions, feedback loops and continuous improvement over time.
Where appropriate and where sufficiently developed during the Workshop process, the CWA is complemented by illustrative supporting materials, such as examples, schematic representations, documentation prompts, case-based descriptions or non-binding guidance elements derived from Citizens4PED experience. Such materials are intended to support interpretation and application of the guidance and do not constitute mandatory tools, formats or requirements. Illustrative case annexes based on the Citizens4PED Living Labs are provided in Annex B.
This CWA is not intended to be used as a prescriptive standard, regulatory benchmark or certification scheme for PED performance. It does not define mandatory energy performance thresholds, minimum energy standards, compliance criteria, contractual obligations or binding requirements for PED planning, design, implementation or monitoring.
This CWA does not replace local planning regulations, technical norms, legal procedures, energy regulations, building codes, procurement rules or other applicable national, regional or local requirements. It also does not provide detailed technical design specifications for energy systems, buildings, infrastructures or digital platforms.
This CWA does not establish a fixed PED model, a universal PED definition, or a location-screening methodology for selecting suitable areas. Instead, it supports flexible and informed decision-making by helping users structure, document and interpret the enabling conditions, assumptions, constraints and choices that shape PED development in specific local contexts.
All references to standards, assessment schemes, tools, labels, projects or external guidance documents are informative. They are provided to support orientation and interoperability with existing knowledge and practice, without creating normative dependencies or obligations.
For the purposes of this CWA, the integrated component of the guidance is operationalised as a Development Readiness Integration Workflow. This workflow provides the overarching process logic through which PED development may be structured across scoping, context analysis, objective setting, scenario development, screening, governance reflection, implementation readiness, monitoring and adaptive learning.
The context-sensitive component of the guidance is operationalised through a set of context-sensitive guidance elements developed in Clauses 6 to 11. These elements support users in adapting the Development Readiness Integration Workflow to local technical, spatial, institutional, regulatory, social, governance and equity conditions. They are intended to help users take account of data availability, stakeholder configurations, territorial constraints, policy frameworks, implementation capacities and local vulnerabilities when developing PED pathways.
The CWA is based on the practical experiences, findings and lessons learned from the Citizens4PED project. In this document, Development Readiness refers to the capacity of a local context to meaningfully progress through PED development phases by clarifying decision-making conditions, data availability, stakeholder roles, governance arrangements, scenario assumptions and implementation constraints.
This CWA is intended to be used by municipalities, local authorities, urban planners, researchers, consultants, utilities, distribution system operators (DSOs), developers, governance actors and other stakeholders engaged in PED co-design, planning, implementation, monitoring or replication. It is particularly relevant for complex, data-poor, institutionally fragmented or under-resourced urban settings, where PED development requires coordination across technical, spatial, institutional and social domains.
This CWA covers the procedural and organisational aspects that support PED Development Readiness. These include, in particular:
- the structuring of an integrated, PED-oriented urban development process, connecting energy planning, spatial planning, governance, stakeholder engagement, implementation readiness and monitoring;
- support for aligning PED development processes with climate-neutrality ambitions, through scenario exploration, carbon-related screening, complementary indicators and transparent documentation of assumptions, without establishing compliance criteria or mandatory performance thresholds;
- the structuring of cooperation between technological, spatial, institutional and social domains involved in PED development;
- the definition of a flexible Development Readiness workflow, including process phases, inputs, outputs, decision checkpoints and assumption management;
- the identification of contextual information needs, data quality considerations, proxy use, stakeholder and asset mapping, and territorial and institutional readiness conditions;
- the exploration and documentation of alternative PED scenarios, including the clarification of assumptions, boundaries, data limitations and context-specific constraints;
- the use of screening metrics and decision-support criteria, including the Carbon Neutrality Check (CNC) and complementary economic, resilience-related, governance and equity considerations, as inputs to collective interpretation rather than as compliance criteria;
- the integration of governance, participation and equity considerations into PED development processes, including attention to formal and informal stakeholders, vulnerable groups, distributional effects and decision transparency;
- the preparation of implementation-oriented action planning, including policy–technology coherence, administrative capacity, roles and responsibilities, risks, quick wins, and adaptive replication or scaling considerations;
- the establishment of monitoring, learning and adaptation mechanisms that support the revision of assumptions, feedback loops and continuous improvement over time.
Where appropriate and where sufficiently developed during the Workshop process, the CWA is complemented by illustrative supporting materials, such as examples, schematic representations, documentation prompts, case-based descriptions or non-binding guidance elements derived from Citizens4PED experience. Such materials are intended to support interpretation and application of the guidance and do not constitute mandatory tools, formats or requirements. Illustrative case annexes based on the Citizens4PED Living Labs are provided in Annex B.
This CWA is not intended to be used as a prescriptive standard, regulatory benchmark or certification scheme for PED performance. It does not define mandatory energy performance thresholds, minimum energy standards, compliance criteria, contractual obligations or binding requirements for PED planning, design, implementation or monitoring.
This CWA does not replace local planning regulations, technical norms, legal procedures, energy regulations, building codes, procurement rules or other applicable national, regional or local requirements. It also does not provide detailed technical design specifications for energy systems, buildings, infrastructures or digital platforms.
This CWA does not establish a fixed PED model, a universal PED definition, or a location-screening methodology for selecting suitable areas. Instead, it supports flexible and informed decision-making by helping users structure, document and interpret the enabling conditions, assumptions, constraints and choices that shape PED development in specific local contexts.
All references to standards, assessment schemes, tools, labels, projects or external guidance documents are informative. They are provided to support orientation and interoperability with existing knowledge and practice, without creating normative dependencies or obligations.
Base documents:
CWA 18485:2026
IEC TS 63102:2026
Grid code compliance assessment methods for grid connection of renewable energy power plants
Scope:
IEC TS 63102:2026 highlights the recommended technical methods of grid code compliance assessment of renewable energy (RE) power plants connected to the grid, including wind power plants, photovoltaic (PV) power plants, and hybrid power plants. Hybrid power plants refer to wind/PV power plants equipped with energy storage systems or combined power plants based on wind, PV, and energy storage. The electrical behaviour of RE power plants in this document includes the operating area, control performance, fault ride-through capability, power quality, oscillation, and grid adaptability.
Compliance assessment is the process of determining whether the electrical behaviour of RE power plants meets the specific technical requirements in grid codes or technical regulations. The assessment methods include compliance field test, compliance simulation, hardware-in-the-loop (HIL) simulation and compliance monitoring. The input for compliance assessment includes relevant supporting documents, test results, validated simulation models, controller hardware, and continuous monitoring data. This document focuses exclusively on assessment methods from a technical perspective. It does not address certification-related procedures.
This document is applicable to RE power plants connected to the electrical power grid.
This second edition cancels and replaces the first edition published in 2021. This edition includes the following significant technical changes with respect to the previous edition:
a) in terms of scope, wind and PV power plants are replaced by the renewable energy power plants that includes wind power plants, PV power plants and hybrid power plants. Oscillation and grid adaptability are added in the assessment scope;
b) Clause 5 optimizes the descriptions of compliance field testing, compliance simulation, HIL simulation and compliance monitoring assessment methods, and recommends corresponding assessment methods according to different phases of renewable energy power plants and various assessment items;
c) Clause 6 supplements compliance field test methods for reactive power capability assessment;
d) Clause 7 adds synthetic inertia response and voltage slope control to control performance assessment, adjusts recommended contents for field testing and HIL simulation, f) improves applicable conditions and reference procedures of assessment methods, and updates illustrative charts and figures;
e) Clause 8 adds cascaded under and over voltage ride-through assessment cases, and refines simulation procedures and requirements for simulation results;
f) Clause 9 incorporates compliance simulation and monitoring methods into power quality assessment;
g) oscillation assessment is newly introduced, adopting combined time-domain and frequency-domain simulation as well as monitoring methods, with the consideration of renewable energy power plants connected to grid via HVDC;
i) grid adaptability assessment is newly supplemented, specifically covering the following withstand capability, such as voltage unbalance factor, flicker and harmonics, phase angle jump and grid strength;
j) Annex A adds topological structure examples of renewable energy power plants, compliance simulation setup, and improves contents including HIL simulation setup, monitoring of electrical performance and harmonics simulation.
Compliance assessment is the process of determining whether the electrical behaviour of RE power plants meets the specific technical requirements in grid codes or technical regulations. The assessment methods include compliance field test, compliance simulation, hardware-in-the-loop (HIL) simulation and compliance monitoring. The input for compliance assessment includes relevant supporting documents, test results, validated simulation models, controller hardware, and continuous monitoring data. This document focuses exclusively on assessment methods from a technical perspective. It does not address certification-related procedures.
This document is applicable to RE power plants connected to the electrical power grid.
This second edition cancels and replaces the first edition published in 2021. This edition includes the following significant technical changes with respect to the previous edition:
a) in terms of scope, wind and PV power plants are replaced by the renewable energy power plants that includes wind power plants, PV power plants and hybrid power plants. Oscillation and grid adaptability are added in the assessment scope;
b) Clause 5 optimizes the descriptions of compliance field testing, compliance simulation, HIL simulation and compliance monitoring assessment methods, and recommends corresponding assessment methods according to different phases of renewable energy power plants and various assessment items;
c) Clause 6 supplements compliance field test methods for reactive power capability assessment;
d) Clause 7 adds synthetic inertia response and voltage slope control to control performance assessment, adjusts recommended contents for field testing and HIL simulation, f) improves applicable conditions and reference procedures of assessment methods, and updates illustrative charts and figures;
e) Clause 8 adds cascaded under and over voltage ride-through assessment cases, and refines simulation procedures and requirements for simulation results;
f) Clause 9 incorporates compliance simulation and monitoring methods into power quality assessment;
g) oscillation assessment is newly introduced, adopting combined time-domain and frequency-domain simulation as well as monitoring methods, with the consideration of renewable energy power plants connected to grid via HVDC;
i) grid adaptability assessment is newly supplemented, specifically covering the following withstand capability, such as voltage unbalance factor, flicker and harmonics, phase angle jump and grid strength;
j) Annex A adds topological structure examples of renewable energy power plants, compliance simulation setup, and improves contents including HIL simulation setup, monitoring of electrical performance and harmonics simulation.
Base documents:
Replaces:
IEC TS 63102:2021
IEC TS 63202-6:2026
Photovoltaic cells - Part 6: Hot water soaking test for crystalline silicon photovoltaic cells
Scope:
IEC TS 63202:2026 defines a hot water soaking test to determine whether crystalline silicon photovoltaic (PV) cells have metallization that is durable enough to be used in PV modules.
It is applied to crystalline silicon PV cells whose metallization is made with conductive metal pastes.
Hot water soaking test is an accelerated aging test carried out using conditions of high temperature and humidity. This test can be used to identify cells with poor metal adhesion. Such cells shed some of their metal during delivery and storage, causing visual defects and potential risk of module reliability issues.
It is applied to crystalline silicon PV cells whose metallization is made with conductive metal pastes.
Hot water soaking test is an accelerated aging test carried out using conditions of high temperature and humidity. This test can be used to identify cells with poor metal adhesion. Such cells shed some of their metal during delivery and storage, causing visual defects and potential risk of module reliability issues.
Base documents:
IEC TS 61400-28-2:2026
Wind energy generation systems - Part 28‑2: Decommissioning and preparation for recycling
Scope:
IEC TS 61400‑28-2:2026 addresses the decommissioning and preparation for recycling of wind turbines.
This scope includes all the tasks and on-site considerations of the different process steps, from the beginning of the dismantling phase, material preparation and arrangement, and preparation for shipment to re-using or recycling facilities. Wind turbines in the context of this document include blades, hubs, nacelles, towers, foundations, generators, gearboxes, cables, electrical equipment, transformers, and any other equipment that can be dismantled from wind turbines and not listed before.
The purpose of this document is to define the framework conditions of decommissioning and preparation for recycling of wind turbines, which includes the tasks and considerations of each of the steps of the process. The objective is to provide basic high-level information on the sustainable and efficient decommissioning and dismantling arrangements for wind turbines.
This document can be used by manufacturers, asset owners, governments, operators, recyclers and personnel involved in the decommissioning and preparation for recycling of wind turbines.
This scope includes all the tasks and on-site considerations of the different process steps, from the beginning of the dismantling phase, material preparation and arrangement, and preparation for shipment to re-using or recycling facilities. Wind turbines in the context of this document include blades, hubs, nacelles, towers, foundations, generators, gearboxes, cables, electrical equipment, transformers, and any other equipment that can be dismantled from wind turbines and not listed before.
The purpose of this document is to define the framework conditions of decommissioning and preparation for recycling of wind turbines, which includes the tasks and considerations of each of the steps of the process. The objective is to provide basic high-level information on the sustainable and efficient decommissioning and dismantling arrangements for wind turbines.
This document can be used by manufacturers, asset owners, governments, operators, recyclers and personnel involved in the decommissioning and preparation for recycling of wind turbines.
Base documents:
EVS-EN IEC 61400-12-5:2022/AC:2026
Wind energy generation systems - Part 12-5: Power performance - Assessment of obstacles and terrain
Scope:
Corrigendum to EN IEC 61400-12-5:202
Base documents:
IEC 61400-12-5:2022/COR1:2025; EN IEC 61400-12-5:2022/AC:2026-10
Replaced standards
EVS-EN 12309-2:2015
Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70 kW - Part 2: Safety
Scope:
1.1 Scope of EN 12309 series
Appliances covered by this European Standard include one or a combination of the following:
― gas fired sorption chiller;
― gas fired sorption chiller/heater;
― gas fired sorption heat pump.
This European Standard applies to appliances only when used for space heating and cooling with or without heat recovery.
This European Standard applies to appliances having flue gas systems of type B and C (according to CEN/TR 1749) and to appliances designed for outdoor installations. EN 12309 does not apply to air conditioners, it only applies to appliances having:
― integral burners under the control of fully automatic burner control systems;
― closed system refrigerant circuits in which the refrigerant does not come into direct contact with the water or air to be cooled or heated;
― mechanical means to assist transportation of the combustion air and/or the flue gas.
The above appliances can have one or more primary or secondary functions (i.e. heat recovery - see definitions in prEN 12309 1:2012). In the case of packaged units (consisting of several parts), the standard applies only to those designed and supplied as a complete package.
The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by this European Standard.
Installations used for heating and/or cooling of industrial processes are not within the scope of these standards.
NOTE All the symbols given in this text are used regardless of the language used.
1.2 Scope of this Part 2 to EN 12309
This part of EN 12309 deals with the safety of gas-driven sorption heat pumps as defined in prEN 12309 1. Only types B12 for outdoor installations, B13 for outdoor installations, B22 for outdoor installations, B23 for outdoor installations, C12 and C13, C32 and C33 are covered in this European Standard.
Appliances covered by this European Standard include one or a combination of the following:
― gas fired sorption chiller;
― gas fired sorption chiller/heater;
― gas fired sorption heat pump.
This European Standard applies to appliances only when used for space heating and cooling with or without heat recovery.
This European Standard applies to appliances having flue gas systems of type B and C (according to CEN/TR 1749) and to appliances designed for outdoor installations. EN 12309 does not apply to air conditioners, it only applies to appliances having:
― integral burners under the control of fully automatic burner control systems;
― closed system refrigerant circuits in which the refrigerant does not come into direct contact with the water or air to be cooled or heated;
― mechanical means to assist transportation of the combustion air and/or the flue gas.
The above appliances can have one or more primary or secondary functions (i.e. heat recovery - see definitions in prEN 12309 1:2012). In the case of packaged units (consisting of several parts), the standard applies only to those designed and supplied as a complete package.
The appliances having their condenser cooled by air and by the evaporation of external additional water are not covered by this European Standard.
Installations used for heating and/or cooling of industrial processes are not within the scope of these standards.
NOTE All the symbols given in this text are used regardless of the language used.
1.2 Scope of this Part 2 to EN 12309
This part of EN 12309 deals with the safety of gas-driven sorption heat pumps as defined in prEN 12309 1. Only types B12 for outdoor installations, B13 for outdoor installations, B22 for outdoor installations, B23 for outdoor installations, C12 and C13, C32 and C33 are covered in this European Standard.
Base documents:
EN 12309-2:2015
Replaced:
EVS-EN 12309-2:2026
EVS-EN 12309-2:2015/AC:2015
Gas-fired sorption appliances for heating and/or cooling with a net heat input not exceeding 70 kW - Part 2: Safety
Scope:
Corrigendum for EN 12309-2:2015
Base documents:
EN 12309-2:2015/AC:2015
Replaced:
EVS-EN 12309-2:2026
IEC TS 63102:2021
Grid code compliance assessment methods for grid connection of wind and PV power plants
Scope:
IEC TS 63102:2021(E) highlights recommended technical methods of grid code compliance assessment for grid connection of wind and PV power plants as the basic components of grid connection evaluation. The electrical behaviour of wind and PV power plants in this technical specification includes frequency and voltage range, reactive power capability, control performance including active power based control and reactive power based control, fault ride through capability and power quality.
Compliance assessment is the process of determining whether the electrical behaviour of wind and PV power plants meets specific technical requirements in grid codes or technical regulations. The assessment methods include compliance testing, compliance simulation and compliance monitoring. The input for compliance assessment includes relevant supporting documents, testing results and validated simulation models, and continuous monitoring data. The scope of this technical specification only covers assessment methods from a technical aspect; processes related to certification are not included.
This technical specification is applicable to wind and PV power plants connected to the electrical power grid.
Compliance assessment is the process of determining whether the electrical behaviour of wind and PV power plants meets specific technical requirements in grid codes or technical regulations. The assessment methods include compliance testing, compliance simulation and compliance monitoring. The input for compliance assessment includes relevant supporting documents, testing results and validated simulation models, and continuous monitoring data. The scope of this technical specification only covers assessment methods from a technical aspect; processes related to certification are not included.
This technical specification is applicable to wind and PV power plants connected to the electrical power grid.
Base documents:
Replaced:
IEC TS 63102:2026
Drafts
prEN IEC 62852:2026
PV coupler for DC-application in photovoltaic systems - Safety requirements and tests
Scope:
This International Standard applies to PV couplers for use in the d.c. circuits of photovoltaic systems according to IEC 60364-7-712 and PV arrays according to IEC 62548-1, categorized as class II of IEC 61140 with rated voltages up to 1 500 V d.c. and rated currents up to 125 A per contact.
This standard applies to PV couplers consisting of connectors from same product family of same manufacturer without breaking capacity, but which are able to be engaged and disengaged under voltage (i.e. when live, Connector under voltage (CuV)).
Note 1 to entry: The meaning of “manufacturer” is described in 3.3.
This standard also applies to connectors for PV couplers which are intended to be built-in or integrated in enclosures of devices for photovoltaic systems. This standard may be used as a guide for PV couplers in photovoltaic systems of classes 0 and III according to IEC 61140. This document does not apply to connectors for data collection, tracker controls or similar, but it may be used as a guide for those connectors.
This standard does not cover any requirement which may be applied for tests of combinations of plugs and sockets from different manufacturers.
Note 2 to entry: IEC 63678, Standardized plug and socket design for DC photovoltaic (PV) systems for intermatability of connectors from different manufacturers is in development.
This standard applies to PV couplers consisting of connectors from same product family of same manufacturer without breaking capacity, but which are able to be engaged and disengaged under voltage (i.e. when live, Connector under voltage (CuV)).
Note 1 to entry: The meaning of “manufacturer” is described in 3.3.
This standard also applies to connectors for PV couplers which are intended to be built-in or integrated in enclosures of devices for photovoltaic systems. This standard may be used as a guide for PV couplers in photovoltaic systems of classes 0 and III according to IEC 61140. This document does not apply to connectors for data collection, tracker controls or similar, but it may be used as a guide for those connectors.
This standard does not cover any requirement which may be applied for tests of combinations of plugs and sockets from different manufacturers.
Note 2 to entry: IEC 63678, Standardized plug and socket design for DC photovoltaic (PV) systems for intermatability of connectors from different manufacturers is in development.
Base documents:
82/2690/CDV; prEN IEC 62852:2026
prEN IEC 61400-25-2:2026
Wind turbines - Part 25-2: Communications for monitoring and control of wind power plants - Information models
Scope:
1.1 General
The focus of the IEC 61400-25 series is on the communications between wind power plant components such as wind turbines and actors such as SCADA systems. Internal communication within wind power plant components is outside the scope of the IEC 61400-25 series.
The IEC 61400-25 series is based on the IEC 61850 and designed for a communication environment supported by a client-server model. Three areas are defined, that are modelled separately to ensure the scalability of implementations:
• Wind power plant information models,
• Information exchange model, and
• Mapping of these two models to a standard communication profile.
The wind power plant information model and the information exchange model, viewed together, constitute an interface between client and server. In this conjunction, the wind power plant information model serves as an interpretation frame for accessible wind power plant data. The wind power plant information model is used by the server to offer the client a uniform, component-oriented view of the wind power plant data. The information exchange model reflects the whole active functionality of the server. The IEC 61400-25 series enable connectivity between a heterogeneous combination of client and servers from different manufacturers and suppliers.
As depicted in Figure 1, the IEC 61400-25 series define a server with the following aspects:
• Information provided by a wind power plant component, for example “wind turbine rotor speed” or “total power production of a certain time interval”, is modelled and made available for access.
• Services to exchange values of the modelled information defined in IEC 61400-25-3.
• Mapping to a communication profile, providing a protocol stack, to carry the exchanged values from the modelled information (IEC 61400-25-4).
The IEC 61400-25 series only define how to model the information, information exchange and mapping to specific communication protocols. The standard excludes a definition of how and where to implement the communication interface, the application program interface and implementation recommendations. However, the objective of the standard is that the information associated with a single wind power plant component (such as a wind turbine) is accessible through a corresponding logical device.
IEC 61400-25-2 specifies the information model of devices and functions related to wind power plant applications. In particular, it specifies the compatible logical node names, and data objects for communication between wind power plant components. This includes the relationship between logical devices, logical nodes and data objects. The names defined in the IEC 61400-25 series are used to build the hierarchical object references applied for communicating with components in wind power plants.
[Figure 1 – Conceptual communication model of the IEC 61400-25 series]
NOTE 1 The IEC 61400-25 series focus on the common, non-vendor-specific information. Those information items that tend to vary greatly between vendor-specific implementations can for example be specified in bilateral agreements or by user groups.
NOTE 2 This part does not provide tutorial material.
1.2 Published versions of the standard and related namespace names The table below provides a reference between all published editions, amendments or corrigenda of this document and the full name of the namespace.
[Table 2 – Published version of the standard]
1.3 Identification of the code component
Table 3 shows all attributes of IEC 61400-25-2:2026A namespace.
[Table 3 – Attributes of IEC 61400-25-2:2026A namespace]
1.4 Code Component distribution
Each Code Component is a ZIP package containing the electronic representation of the Code Component itself, with a file describing the content of the package (IECManifest.xml).
The life cycle of a code component is not restricted to the life cycle of the related publication.
The publication life cycle goes through two stages, Version (corresponding to an edition) and Revision (corresponding to an amendment). A third publication stage (Release) allows publication of Code Component in case of urgent fixes of InterOp Tissues, thus without need to publish an amendment.
Consequently new release(s) of the Code Component may be released, which supersede(s) the previous release, and will be distributed through the IEC TC57 web site at: http://www.iec.ch/tc57/supportdocuments.
The code component associated to this CDV is a nsd file. It is available as a full version and a light version. The light version is freely accessible on the IEC website for download at: http://www.iec.ch/tc57/supportdocuments, but the usage remains under the licensing conditions.
The latest version/release of the document will be found by selecting the file for the code component with the highest value for VersionStateInfo e.g. IEC_61400-25-2.NSD.{VersionStateInfo}.Light
In case of any differences between the downloadable code component and the IEC pdf published content, the downloadable code component is the valid one; it may be subject to updates. See included history files.
The focus of the IEC 61400-25 series is on the communications between wind power plant components such as wind turbines and actors such as SCADA systems. Internal communication within wind power plant components is outside the scope of the IEC 61400-25 series.
The IEC 61400-25 series is based on the IEC 61850 and designed for a communication environment supported by a client-server model. Three areas are defined, that are modelled separately to ensure the scalability of implementations:
• Wind power plant information models,
• Information exchange model, and
• Mapping of these two models to a standard communication profile.
The wind power plant information model and the information exchange model, viewed together, constitute an interface between client and server. In this conjunction, the wind power plant information model serves as an interpretation frame for accessible wind power plant data. The wind power plant information model is used by the server to offer the client a uniform, component-oriented view of the wind power plant data. The information exchange model reflects the whole active functionality of the server. The IEC 61400-25 series enable connectivity between a heterogeneous combination of client and servers from different manufacturers and suppliers.
As depicted in Figure 1, the IEC 61400-25 series define a server with the following aspects:
• Information provided by a wind power plant component, for example “wind turbine rotor speed” or “total power production of a certain time interval”, is modelled and made available for access.
• Services to exchange values of the modelled information defined in IEC 61400-25-3.
• Mapping to a communication profile, providing a protocol stack, to carry the exchanged values from the modelled information (IEC 61400-25-4).
The IEC 61400-25 series only define how to model the information, information exchange and mapping to specific communication protocols. The standard excludes a definition of how and where to implement the communication interface, the application program interface and implementation recommendations. However, the objective of the standard is that the information associated with a single wind power plant component (such as a wind turbine) is accessible through a corresponding logical device.
IEC 61400-25-2 specifies the information model of devices and functions related to wind power plant applications. In particular, it specifies the compatible logical node names, and data objects for communication between wind power plant components. This includes the relationship between logical devices, logical nodes and data objects. The names defined in the IEC 61400-25 series are used to build the hierarchical object references applied for communicating with components in wind power plants.
[Figure 1 – Conceptual communication model of the IEC 61400-25 series]
NOTE 1 The IEC 61400-25 series focus on the common, non-vendor-specific information. Those information items that tend to vary greatly between vendor-specific implementations can for example be specified in bilateral agreements or by user groups.
NOTE 2 This part does not provide tutorial material.
1.2 Published versions of the standard and related namespace names The table below provides a reference between all published editions, amendments or corrigenda of this document and the full name of the namespace.
[Table 2 – Published version of the standard]
1.3 Identification of the code component
Table 3 shows all attributes of IEC 61400-25-2:2026A namespace.
[Table 3 – Attributes of IEC 61400-25-2:2026A namespace]
1.4 Code Component distribution
Each Code Component is a ZIP package containing the electronic representation of the Code Component itself, with a file describing the content of the package (IECManifest.xml).
The life cycle of a code component is not restricted to the life cycle of the related publication.
The publication life cycle goes through two stages, Version (corresponding to an edition) and Revision (corresponding to an amendment). A third publication stage (Release) allows publication of Code Component in case of urgent fixes of InterOp Tissues, thus without need to publish an amendment.
Consequently new release(s) of the Code Component may be released, which supersede(s) the previous release, and will be distributed through the IEC TC57 web site at: http://www.iec.ch/tc57/supportdocuments.
The code component associated to this CDV is a nsd file. It is available as a full version and a light version. The light version is freely accessible on the IEC website for download at: http://www.iec.ch/tc57/supportdocuments, but the usage remains under the licensing conditions.
The latest version/release of the document will be found by selecting the file for the code component with the highest value for VersionStateInfo e.g. IEC_61400-25-2.NSD.{VersionStateInfo}.Light
In case of any differences between the downloadable code component and the IEC pdf published content, the downloadable code component is the valid one; it may be subject to updates. See included history files.
Base documents:
88/1199/CDV; prEN IEC 61400-25-2:2026